Is E31.2 a billable ICD-10-CM code?

No. E31.2 is a non-billable header code. Code to a higher level of specificity using one of its child codes.

Where does E31.2 sit in the tabular list?

Endocrine, nutritional and metabolic diseases (E00-E89), in the block Disorders of other endocrine glands (E20-E35).

What cannot be coded together with E31.2?

E31.2 carries Excludes1 notes, which means the conditions they list can never be coded together with it on the same encounter. Some are written on the categories above E31.2 (E31) and apply to it just the same.

E31.2

E31.2 — Multiple endocrine neoplasia [MEN] syndromes

Non-billable headerICD-10-CM

E31.2 is a non-billable header ICD-10-CM code for multiple endocrine neoplasia [men] syndromes. It cannot be billed on its own: choose one of the more specific child codes below.

Code also

Both codes may be needed to describe the encounter fully. Sequencing depends on the reason for the visit.

any associated malignancies and other conditions associated with the syndromes

Inclusion terms

Alternative wordings a physician may use in the chart for this same code.

Multiple endocrine adenomatosis

Excludes1 inherited from the categories above E31.2

These are not written on E31.2, but they bind it: a note on a category applies to every code beneath it. Billing E31.2 with anything listed here is a denial.

Written on E31 — Polyglandular dysfunction

ataxia telangiectasia [Louis-Bar] (G11.3)
dystrophia myotonica [Steinert] (G71.11)
pseudohypoparathyroidism (E20.1)

Other codes that can never be billed with E31.2

These codes carry an Excludes1 note pointing at E31.2. The conflict binds both ways, but ICD-10-CM only writes it down on one side — so you would not find this by reading E31.2 alone.

E31.1Polyglandular hyperfunction
D44Neoplasm of uncertain behavior of endocrine glands
Z15.81Genetic susceptibility to multiple endocrine neoplasia [MEN]

Risk adjustment

E31.2 does not map to an HCC and does not risk-adjust under CMS-HCC V28. That is normal — most ICD-10 codes do not. It still needs to be coded correctly; it just will not move a RAF score.

Code history

E31.2 has not changed since FY2024 — no addition, revision or deletion across the three most recent ICD-10-CM releases.

Code to one of these instead E31.2

4 child codes. Green means billable.

Related codes at this level

Codes that share E31. If E31.2 is not quite right, the correct code is usually one of these.

Questions about E31.2

Is E31.2 a billable ICD-10-CM code?: No. E31.2 is a non-billable header code. Code to a higher level of specificity using one of its child codes.
Where does E31.2 sit in the tabular list?: Endocrine, nutritional and metabolic diseases (E00-E89), in the block Disorders of other endocrine glands (E20-E35).
What cannot be coded together with E31.2?: E31.2 carries Excludes1 notes, which means the conditions they list can never be coded together with it on the same encounter. Some are written on the categories above E31.2 (E31) and apply to it just the same.